Mold-plate for concrete construction.



No. 884,166. PAT-ENTBD APR. 7, 1908.

y E. e. 'KEMPBR;

MOLD PLATE FOR CONCRETE oonsmucnous.

APPLICATION P ILED FEB. 14, 1907- v I I 7 SJ nvwwto i Ewan?- lam 26] beresorted to when desired.

ERNEST G. KEMPER,

OF DALLAS, TEXAS.

MOLD-PLATE FOR CONCRETE CONSTRUCTION.

Application filed February 14, 1907.

' Specification of Letters Patent.

Patented April '7, 1908.

Serial No. 357,311.

To all whom it may concern:

Be it known that I, ERNEST G. KEMPER, a l

citizen of the United States, residing at Dall las, in the county ofDallas and State of 1 Texas, have invented new and useful Improvementsin Mold Plates for Concrete Construction, of which the following is aspecification.

This invention relates to the construction of walls of concrete, cementor analogous plastic material; and it has for its object to dispensewith the cumbersome and expensive wooden cribbing which is usuallyemployed, and to enable walls of this character to be constructed moresimply, efficiently and inexpensively than by means heretofore employed.

With these and other ends in view which will readily appear as thenature of the invention is better understood, the said inventionconsists in mold plates of a simple and improved construction; said moldplates adapted to be shifted or transferred as the construction of thewall progresses.

The invention further consists in the improved construction and novelarrangement and combination of parts which will be hereinafter fullydescribed and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferredform of the invention; it being, however, understood that no limitationis necessarily made to the precise structural details therein exhibited,but that changes, alterations and modifications within the scope of theinvention may In the drawings, Figure 1 is a perspective view showing apair of mold plates constructed in accordance with the principles oftheinvention, said mold plates being separably connected with each otherby means of transverse binding rods. Fig. 2 is an end view showing themold plates in position upon the principal edge of a wall in process ofconstuction, said wall being shown in section.

Corresponding parts in both figures are denoted by like. characters ofreference.

The mold plates A and B of the present invention are preferablyconstructed of sheet metal, such as steel; said plates being of anydesired dimensions, and provided with longitudinal corrugations 22, saidcorrugations being formed by bending the plates to form alternatelydisposed ribs and grooves, adj acent to each other, throughout the saidplates. It is preferred that said corrugations terminate at the loweredges of the plates in outward-projecting flanges 3-3 and at the upperedges of said plates in inward-projecting flanges 4-4.

The plates A and B are reinforced at intervals by means of verticallydisposed strips or bars 55, which are secured exteriorly of the ribsformed by the corrugations of the plates, and are connected with eachother at intervals by means of transverse binding rods 66 extendingthrough the reinforcing strips 5 and provided at their respective endswith heads 7 and nuts 8. The plates A and B are provided at their loweredges with downward extending lugs 9-9 secured ex teriorly upon saidplates by rivets 10 or other suitable fastening means. i

It will be seen that the legs 9-9 are permanently connected with thecorrugated mold plates, while the reinforcing strips or bars 5-5 aredetachably connected with said mold plates by means of the transversebinding rods 6. The bars or strips 5 will preserve the shape of thecorrugated plates which latter, even when made of light material, willthus be enabled to support the weight of the plastic material which, inoperation, is disposed between said plates, and the integrity of thecorrugations of said plates will be accurately preserved; this isobviously important in order to insure neatness and proper finish.

In the practical employment of the improved mold plates, said plates areconnected with each other by the binding rods 6, said plates beingspaced apart a distance equal to the thickness of the wall that isdesired to be built. A row or tier of the mold plates are supported uponthe ground or upon the foundation, after which the concrete or otherplastic material that is to be employed in the construction of the wallis deposited in the space between the plates. After permitting thematerial to set and harden for a suitable length of time, the bindingrods are withdrawn, and the mold plates are removed, said plates beingnow transferred to the upper edge of the wall where they are againconnected with each other by means of the binding rods 6, as will beclearly understood by reference to Fig. 2 of the drawings. It will beobserved that the downward projecting lugs 9 will engage the sides ofthe wall, and will thus assist in preventing the lower ends of theplates from collapsing inwardly before the intervening space is filledwith plastic material; it will be further observed that the divergentflanges 33'at the lower edges of the plates will rest firmly upon theinclined surfaces 1111 formed or molded at the upper end of the Wall inthe process of con-' the improved mold plates may be used indefinitely.Owing to the corrugated form of the plates, light material may beemployed in the construction thereof; it n being understood that thecorrugations will be comparatively small, so as not to detract from theappearance of the wall. The mold plates are also considerably bracedandreinforced by the strips or bars 55, it being understood that i thelatter may be permanently attached to said plates, if preferred;'usually, however,

aving thus fully described the invention,

What I claim is A pair of sheet metal mold plates for concreteconstruction provided throughout with longitudinal corrugationsincluding divergent terminal flanges at the lower edges'and convergenttermmal flanges at the upper edges of said plates, and downwardextending lugs at the lower edges of said plates, in combination withexteriorly disposed reinforcing strips, and binding rods extendingtransversely through the plates and the reinforcing strips. 1

In testimony whereof, I affix my signature in presence of two witnesses.

ERNEST G. KEMPER.

Witnesses:

E. R. BRYAN. JAs. S. DAY.

